Time-registering clock



E. PRESCOTT. Time-Registering Clocks.

No. 223,535. Patented Jan. 13, 1880.-

/ZiiZ I Q INVENTEIR N PETERS F HlNGTON D C UNITED STATES PATENT OFFICE.

EDWIN PRESCOTT, OF HAMPTON FALLS, NEW HAMPSHIRE, ASSIGNOR TO JOHN B. JOHNSON, OF BOSTON, MASSACHUSETTS.

TIME-REGISTERING CLOCK.

SPECIFICATION forming part of Letters Patent No. 223,535, dated January 13, 1880.

Application filed July 10, 1879.

To all whom it may concern:

Be it known that I, EDWIN PRESCOTT, of Hampton Falls, county of Rockiugham, and State of New Hampshire, have invented a new and useful Improvement in Time-Itegisterin g Clocks, which invention is fully set forth in the following specification.

This invention relates to certain improvements in time-registering clocks; and it consists of a novel method of holding and operating the perforating-needle by means of a rolling or sectoral lever that has a rolling motion at its base, which corresponds to the circumference of the circle, whereby the point representing the center is caused to move in a straightline, the same as the axle of a wheel moves in a line parallel to the floor upon which it is rolled. By placing the perforatingneedle at the point of the sector or center of the circle it will, upon a lateral motion being imparted to the lever, be carried in a straight line across the path of the registering-paper.

In the drawings accompanying this specification, Figure 1 is a plan, and Fig. 2 a side elevation.

A is the frame or support, to which are secured the electromagnets O and the train of wheels D. a is a lever, hung on a shaft at a, and to the short end of which is secured the 0 armature b, and whose long end is T-shaped,

and terminates at a point beneath the perforating-needle c, and forms the hammer wherewith to drive the needle. dis a spiral spring, by which the lever to is held in its normal po- 3 5 sition.

E is a rolling lever, having teeth at its base, which engage with the teeth on the baseplate E, and to which the perforatingneedle is secured at c. c is a spiral spring, by which the lever is drawn back and held in its normal position.

To the shaft of the wheel 9 is secured a camwheel, 9, against which the pin It bears, and as the cam-wheel revolves motion is given to the lever E.

The shaft is is connected by the arm k to the long end of the lever a, and the short arm k stands in the path of the pin i in the wheel 9, and operates as a stop-motion to the train D.

F F are guide-plates, between which the registering-paper Gr passes.

Fig. 3 shows an enlarged view of the lever E and the cam-wheel g.

The lever E consists of the sector of a circle, the base of which represents the circumference of the circle, the center bein at the point occupied by the needle 0.

As the cam-wheel g revolves the lever is caused to roll upon its base, and the needle is moved in a straight line, as is shown by the dotted lines. The base of the lever is kept in its place by means of teeth which engage with the teeth of the base-plate E.

A D-shaped piece of metal is secured to the back of the lever E, by means of which a bearing for one end of the needle 0 is provided, the other end being fitted to a hole in the lever itself. The needle is held down by a spring, 0.

As my invention is applicable to any timeregistering apparatus wherein a perforatingneedle is employed, it is not necessary to give a description of the electric or the time-registering apparatus.

It will be readily understood that when the electro-magnet O is charged the armature I) will be drawn to it, thereby giving motion to the lever a, and by means of the arm L partially rotating the shaft 7i: and displacing the arm k thereby allowing the wheel g, which is driven by a spring or weight power, to turn, and by means of the cam-wheel 9 give mo tion to the lever E, whereby the needle 0 is carried in a straight line across the registering-paper as it emerges from between the 8 5 guide-plates F F. If, while the needle is thus moving across the paper, the electro-magnet is charged and released one or more times in succession, each closing of the circuit will operate the lever a and drive the needle 0, there- 0 by making punctures in the registering-paper, which is caused, by suitable mechanism operated by a time-piece, to pass over the needle, so that the graduations marked upon the paper shall indicate at what hour the punctures were made.

Having thus fully described the nature and operation of my invention, whet l claim as new, and desire to secure by Letters Patent, 1S

In a time-registering clock, the lever E, havin g its base concentric to the needle 0, Wherehy it has a rolling motion upon the base-plate E, by means of which the needle 0 is carried 10 in it straightline across the registering-paper G, in the manner shown and described.

EDVl -IN PRESCOTT. Witnesses:

HERMAN ERHARD, W. S. HILL. 

